Improvement in scale-beams



J. F. KEELER.

Scale Beam.

Patented Sept, 11, 1866.

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UNITED STATES.

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JOEL KEELER, OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN SCALE-BEAMS.

Specification forming part of Letters Patent No. 57,921, dated September 11, 1866.

To al whom it may concern:

Be it known that I, JOEL F. KEELER, of Pittsburg, county of Allegheny, and State of Pennsylvania, have invented a new and Improved Mode of Constructing IVeigh-Scale Beams and theirAttachments andIdo hereby declare that the following is a clear, full, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, like letters referring to the same parts.

Fig. I is a side view of the beam and weightholder. Fig. II is a cross-section of the beam and poises. Fig. III is a top view.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

I make my beams and weight-holders in any known form or of any known material, and either use them separately or in connection with other beams or levers, and sometimes thus help to form a platform -scale.' Thus, a a are the scale-beam, and a is its suspender. b represents a sliding poise on the top of the beam, and held to the beam by the flange or projection b on the back side of the beam. 0 is a poise, made to be moved along the bottom of the beam, and held to it by the flange or projection c. It is held firmly'at any given point by the thumb-screw (1. Each poise has its own marks and figures on the beam, or they have them (if of the same weight) in common. .They are so made, as seen in Fig. II, that they can pass each other without hitting. These poises usually weigh only the lighter or smaller denominations of weight, and either of them the net weight or tare, at will. N

(1 represents the counter-weight holder or cup-rod. c, e, and c are divisions in this rod or weight-holder, made by fastening to it the plates :0, w, and m at suitable distances from each other. The lower part, c, is usually used to hold any weights that may be needed to balance the scale itself. The middle section usually holds the weights that balance the larger denominations in the weight of the car or other vehicle usually called tare. The poise on the lower edge of the beam 0 usually balances the smaller denominations of the tare, and thus the entire box, car, or other tare is balanced. The upper section, c, usually holds the weights that balance the larger denominations of the net weight, while the poise on the top of the beam usually balances the lighter or smaller denominations of the net weight, and thus the net and the tare are both weighed and shown in figures in the simplest and most convenient manner. Each weight on the cup-rod just comes up to the mark under the figures, which increase in amount as weights are added. In some cases, however, I use large poises on the beam instead of counter-weights and cup-rod, for showing the large denominations, and smaller poises for showing the small denominations of the net and of the tare.

The advantages of this construction and operation are obvious, as we not only weigh and show the weight separately, both of the net and, the tare, but we do this usually on a single beam, accessible at its whole length, and on the cup-rod, saving, by reference to the figures just above the last added weight, all need to count up the amount of the several weights.

I am aware that two or more poises have been used on scale-beams simultaneously, and that cup-rods have been divided and figures added in various ways. I do not, therefore, claim such constructions broadly.

hat I do claim, and desire to secure by Letters Patent of the United States, is-

1. Constructing scalebeams and their appendages so as to show both the larger and the smaller denominations of the net and ot' the tare weighed, substantially as described.

2. Constructing scale-beams so that two or more poises may be made to pass each other along the same beam, usually its entire length, substantially in the manner described.

3. Dividing the counterweight holder (1 into sections, when two or more of said sec tions are marked or figured, substantially as described, and for the purposes set forth.

J CEL F. KEELER.

\Vi tnesses:

GEORGE H. CHRISTY, ALFRED C. LACEY. 

